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Modeling Δ15n Evolution: First Palaeoceanographic Applications In A Coastal Upwelling System, Xavier Giraud, Philippe Bertrand, Véronique Garçon, Isabelle Dadou

Journal of Marine Research

The δ¹⁵N signal in marine sediments appears to be a good palaeoceanographic tracer. It records biological processes in the water column and is transferred to and preserved in the sediments. Changes in forcing factors in upwelling systems may be recorded by δ¹⁵N. These forcing conditions can be of a biogeochemical nature, such as the initial isotopic signal of the nutrients or the trophic structure, or of a physical nature, such as wind stress, insolation, temperature or dynamic recycling. A simple nitrogen-based trophic chain model was used to follow the development of the nitrogen isotopic signal in …

Abyssal Upwelling In The Indian Ocean: Radiocarbon Diagnostics, Ashwanth Srinivasan, Claes G. H. Rooth, Zafer Top, D. B. Olson

Journal of Marine Research

The GEOSECS Indian Ocean radiocarbon and carbonate chemistry data set are used to estimate the mean upwelling transport of bottom water in the Indian Ocean north of 30S. The study uses an "adjusted radiocarbon concentration" which is corrected for the effects of addition of particulate radiocarbon to the deep ocean. The cross-basin uniformity in the vertical gradients of "adjusted radiocarbon" allows quantification of vertical transfer processes using horizontally averaged concentration and fluxes. The estimated total upwelling flux, north of 30S, is 8.2 ± 1.5 × 10⁶ m³ s^-1. The mean upwelling velocity and the vertical diffusivity, …

On The Use Of The Method Of Images To Investigate Nearshore Dynamical Processes, S. A. Thorpe, L. R. Centurioni

Journal of Marine Research

This note describes how the method of images may be used to determine the motion and evolution of two related kinds of phenomena within a wedge of inviscid fluid. The image field of a curved vortex within a wedge with vortex lines lying along sectors of circles around the apex of the wedge is that segment of a complete vortex ring which remains outside the wedge and of which the curved vortex forms a part. The image system can be used to describe the motion, interaction and stability of single or multiple vortices within the wedge. Axisymmetric jets form the …

Water-Mass Formation And Potential Vorticity Balance In An Abyssal Ocean Circulation, Jiayan Yang, James F. Price

Journal of Marine Research

Our goal is to develop some understanding and intuition regarding abyssal ocean circulations. To do this we investigate highly idealized, source/sink-driven flows computed by a single layer, numerical ocean model forced by a prescribed source or sink. The interior circulation is always found to be very slow and Stommel-Arons like. On the other hand, the intense boundary currents may vary considerably from case to case, depending largely upon the potential vorticity (PV) associated with the source or sink. If the source is imposed by downwelling along a northern boundary, then the associated PV flux is zero, and the resulting steady …

The Parameterization Of Baroclinic Instability In A Simple Model, A. Wirth

Journal of Marine Research

Baroclinic instability of zonally forced flow in a two mode quasi-geostrophic numerical model with periodic boundary conditions is considered. Only the largest scale of the baroclinic mode is forced and the scale dependence of a diffusive parameterization of baroclinic layer thickness is determined. It is shown that the effect of baroclinic instability is a decreasing function of scale with an exponent of about half of that corresponding to the commonly used Laplace operator. We furthermore show that there is no linear relation between the time averaged amplitude of the large scale streamfunction (or quasi-geostrophic potential vorticity) and the bolus velocity.

Low-Frequency Variability On The Western Flanks Of The Grand Banks, Nelson G. Hogg

Journal of Marine Research

An array consisting of 21 current meters on nine moorings was set on the western flanks of the Grand Banks in August 1995 and recovered about two years later. The purpose was to explore the possibility that this might be a region of anomalously high topographic wave activity because the local topography so altered the dispersion relation for these waves that they could couple more readily to eastward-moving Gulf Stream meanders. Eddy kinetic energy is, indeed, found to be higher here than elsewhere in the region but only at periods shorter than about 10 days. At longer periods energy in …

Modeling Of The Bottom Water Flow Through The Romanche Fracture Zone With A Primitive Equation Model—Part I: Dynamics, Bruno Ferron, Herlé Mercier, Anne-Marie Treguier

Journal of Marine Research

This paper investigates the dynamics of the Antarctic Bottom Water (AABW) flow through the Romanche Fracture Zone (RFZ) in a primitive equation model with a high horizontal and vertical resolution. Two examples of flows over simple bathymetries show that a reduced gravity model captures the essential dynamics of the primitive equation model. The reduced gravity model is then used as a tool to identify what are the bathymetric structures (sills, narrows) that mostly constrain theAABW flow through the RFZ. When only these structures are represented in the primitive equation model, the AABW flow is shown to be coherent with observations …

Properties Of Vertical Current Shear Across Stratification In The North Sea, Hans Van Haren

Journal of Marine Research

Observations from the central North Sea show that, as soon as thermal stratification becomes established by solar insolation in the spring, the vertical smoothly varying horizontal current structure observed in winter becomes distorted, with strongest vertical shear coincident with the strongest buoyancy gradients (thermoclines). This shear is predominant at the local inertial frequency following strong wind-forcing or when the thermocline thickness is relatively large, and the semidiurnal tidal frequency otherwise. Although the currents at these frequencies have a completely different character, being circularly polarized and mode-1 at the inertial frequency and almost rectilinear and barotropic at the tidal frequency, their …

Minnesota's Permanency And Concurrent Planning Child Welfare System, Jane Ranum

William Mitchell Law Review

No abstract provided.

Concurrent Permanency Planning: Implementation In Hennepin County, Brian J. Guidera

William Mitchell Law Review

No abstract provided.

Black History Month, Gallaudet University Archives

Black Deaf Vertical Files

Lists of achievements by African-American Deaf people, compiled by Gallaudet University Archives and Library staff.

Success And Growth Of Corals Transplanted To Cement Armor Mat Tiles In Southeast Florida: Implications For Reef Restoration, S. L. Thornton, Richard E. Dodge, David S. Gilliam, R. Devictor, P. Cooke

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

In 1997, 271 scleractinian corals growing on a sewer outfall pipe were used in a transplantation study offshore from North Dade County, Florida, USA. Corals were removed from the outfall pipe and transplanted onto concrete armor mat tiles used to cover the pipe. Success (number of corals still attached and alive), mortality (number of dead corals), and growth rates of the transplants were assessed between December 1997 and December 1999. Colony surface area and radius length were measured on scanned photographs to estimate horizontal growth rate. After two years post-transplantation, success rate and overall mortality were 87% and 7.8% respectively. …

Reefs And Coral Carpets In The Miocene Paratethys (Badenian, Leitha Limestone, Austria), Bernhard Riegl, W. E. Piller

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

Biohermal (reefs) and biostromal (coral carpets) facies were studied in the Austrian Middle Miocene Leitha Limestone. In the Vienna Basin ("Fenk quarry") non-framebuilding and framebuilding biostromal coral communities were found. In the Styrian Basin, well developed patch reefs were observed besides coral carpets. In the Fenk quarry, 2 coral carpet types, four non-framework coral communities, and one bivalve/coral community were found. In "Retznei quarry" (Styrian Basin) patch reefs, basal corallinacean calcarenites were followed by a Ponies layer capped by marl, and the main reef-building higher diversity phase dominated by faviids ( Montastraea, Tarbellastraea). In the "Tittenbacher quarry" no internal …

Protecting Individual On-Line Privacy Rights: Making The Case For A Separately Dedicated, Independent Regulatory Agency, 19 J. Marshall J. Computer & Info. L. 93 (2000), Jack Karnes

UIC John Marshall Journal of Information Technology & Privacy Law

Few issues have caused more legal consternation than the level to which individual online privacy rights should be protected. Modern equipment and software enables those who seek to violate privacy rights render a less knowledgeable citizen helpless. Traditional privacy protection is inadequate to protect a fundamental right. Neither Congress nor the courts have dealt with the issue in an effective manner like they have dealt with other areas like telephone and wireless phone communications. The online privacy dilemma is reaching a crisis point. Employers are able to monitor employees’ uses of equipment to prevent any and all personal uses of …

Northwestern News, Winter 1999-2000, Public Relations

Northwestern News

Board names Guy new president; Guy at a glance; The purpose behind the process; New members join Board of Trustees; Vander Werff honored in Hong Kong; Board looks to the future; NWC musicians chosen for Iowa Intercollegiate Band; New setting moves Jonah closer to goal; First-generation students to be aided by grant; Community named among safest; Turnwall honored for English teaching; Dear Mom, Until Tomorrow; Scholtens named Parents of the Year; Northwestern named among best college buys; Student wins national intern contest; Searches are under way for:; Faculty/Staff news: Prayer corner; Carlson advocates overseas study from personal experience; Play encourages …

Backlog 2000, Lipscomb University

Backlogs and Other Yearbooks

Lipscomb University's Backlog yearbook, 2000.

Skeletal Architecture And Density Banding In Diploria Strigosa By X-Ray Computed Tomography, Kevin P. Helmle, Richard E. Dodge, R. A. Ketcham

Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures

Density bands in corals have long been considered a valuable tool for reconstructing past environmental and climatic conditions. X-radiographs reveal density banding within a skeletal slab, but provide little information about the skeletal variability causing banding. The skeletal architecture of Diploria strigosa was analyzed by X-radiography, X-ray computed tomography, and image analysis to identify the specific skeletal elements responsible for density banding. Threedimensional skeletal reconstructions, density-band reconstructions, and skeletal animations were created to assess the apparent changes in skeletal structure associated with density banding. Measurements were made of the dissepiments, thecae, septa, and columellae to determine how element size related …

09. 1999-00 Annual Report, Illinois Mathematics And Science Academy

Class of 2000

No abstract provided.

2000-2001 Undergraduate Catalog, Sacred Heart University

Graduate & Undergraduate Catalogs

No abstract provided.

The Marine Fishes Of Broward County, Florida Report Of 1999-2000 Survey Results Noaa/Nmfs Order # 40genf900158, Richard E. Spieler

Marine & Environmental Sciences Faculty Reports

No abstract provided.

Nova Law Review 24, 3

Nova Law Review

No abstract provided.

The Racialization Of Sexuality: The Queer Case Of Jeffrey Dahmer, Ian Barnard

English Faculty Books and Book Chapters

"In this article I read media and subcultural representations of Jeffrey Dahmer, the white male U.S. serial killer who gained notoriety in the late 1980s for having sex with and then murdering and dismembering men of color in Milwaukee, Wisconsin. My aim is to show the extent to which the degree of Dahmer's homosexualization in a particular representation determines Dahmer' s thinking and actions in the sphere of race, and to suggest how spiraling efforts to separate race from sexuality in the Dahmer case only further intricate the two analytic axes."

Health Professions Division Catalog Academic Year 2000-2001, Nova Southeastern University

Health Professions Divisions Course Catalogs and Course Descriptions

No abstract provided.

Isolation, Characterization, And Differential Expression Of The Murine Sox-2 Promoter, Matthew S. Wiebe, Phillip J. Wilder, David Kelly, Angie Rizzino

Nebraska Center for Virology: Faculty Publications

Sox proteins are expressed at many stages of development and in numerous tissues. The transcription factor Sox-2 is first expressed throughout the inner cell mass and subsequently becomes localized to the primitive ectoderm, developing central nervous system, and the lens. Sox-2 is also highly expressed in F9 embryonal carcinoma cells but becomes undetectable following differentiation of these cells. In this study, we have isolated, sequenced, and performed the first characterization of the Sox-2 promoter of any species. Approximately 2 kb of the Sox-2 5′-flanking region has been sequenced and the primary transcription start site mapped by primer extension analysis. Additionally, …

Ec00-219 2000 Nebraska Swine Report, Rodger K. Johnson

University of Nebraska-Lincoln Extension: Historical Materials

The 2000 Nebraska Swine Report was prepared by the staff in Animal Science and cooperating Departments for use in Extension, Teaching and Research programs. This publications deals with research on swine reproduction, breeding, health, nutrition, economics, and housing.

G00-1419 Community Supported Agriculture, Paul Swanson

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide explains what community supported agriculture is, how it works and what producers will need to do to participate.

Most Nebraskans have not heard of Community Supported Agriculture (CSA) but the concept is about three decades old in Japan and Europe and about 10-15 years old on the east coast of the United States.

G1408 Grain Molds And Mycotoxins In Corn, Jim Stack

University of Nebraska-Lincoln Extension: Historical Materials

Storage molds of corn occur in Nebraska annually, potentially lowering grain quality. Mycotoxin contamination of corn occurs periodically, potentially affecting human and animal health. Learn how to identify the different types and their effects. Introduction In Nebraska, grain molds occur every year to varying degrees on field corn, seed corn, white corn, and other specialty corn hybrids. Most grain mold pathogens become associated with the kernel in the field; however, under certain conditions of temperature, relative humidity, and grain moisture, these molds can grow within the colonized kernel and even spread to adjacent kernels during transport and storage. Several issues …

Assessing Factors That May Predispose Minnesota Farms To Wolf Depredations On Cattle, L. David Mech, Elizabeth K. Harper, Thomas J. Meier, William J. Paul

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Wolf (Canis lupus) depredations on livestock cause considerable conflict and expense in Minnesota. Furthermore, claims are made that such depredations are fostered by the type of animal husbandry practiced. Thus, we tried to detect factors that might predispose farms in Minnesota to wolf depredations. We compared results of interviews with 41 cattle farmers experiencing chronic cattle losses to wolves (chronic farms) with results from 41 nearby "matched" farms with no wolf losses to determine farm characteristics or husbandry practices that differed and that therefore might have affected wolf depredations. We also used a Geographic Information System (GIS) to …

Structure Of A Rat Α1-Macroglobulin Receptor-Binding Domain Dimer, Tsan Xiao, Dianne L. Decamp, Stephen R. Sprang

Biological Sciences Faculty Publications

α-Macroglobulin inhibits a broad spectrum of proteinases by forming macromolecular cages inside which proteinases are cross-linked and trapped. Upon formation of a complex with proteinase, α-macroglobulin undergoes a large conformational change that results in the exposure of its receptor-binding domain (RBD). Engagement of this domain by α-macroglobulin receptor permits clearance of the α-macroglobulin: proteinase complex from circulation. The crystal structure of rat α₁-macroglobulin RBD has been determined at 2.3 Å resolution. The RBD is composed of a nine-stranded β-sandwich and a single α-helix that has been implicated as part of the receptor binding site and that lies on …

Evidence For Microbial Fe(Iii) Reduction In Anoxic, Mining-Impacted Lake Sediments (Lake Coeur D’Alene, Idaho), David E. Cummings, Anthony W. March, Benjamin Bostick, Stefan Spring, Frank Caccavo Jr., Scott Fendorf, Frank Rosenzweig

Biological Sciences Faculty Publications

Mining-impacted sediments of Lake Coeur d'Alene, Idaho, contain more than 10% metals on a dry weight basis, approximately 80% of which is iron. Since iron (hydr)oxides adsorb toxic, ore-associated elements, such as arsenic, iron (hydr)oxide reduction may in part control the mobility and bioavailability of these elements. Geochemical and microbiological data were collected to examine the ecological role of dissimilatory Fe(III)-reducing bacteria in this habitat. The concentration of mild-acid-extractable Fe(II) increased with sediment depth up to 50 g kg⁻¹, suggesting that iron reduction has occurred recently. The maximum concentrations of dissolved Fe(II) in interstitial water (41 mg liter …